#include <iostream>
using namespace std;
class A
{
private:
    int R1, R2;

public:
    A(int r1 = 5, int r2 = 0)
    {
        R1 = r1;
        R2 = r2;
    }
    void show();
};
void A::show()
{
    cout << R1 << "*" << R2 << "=" << R1 * R2 << endl;
};
int main()
{
    A a(1);
    A b(3, 4);
    a.show();
    b.show();
}